If you’ve been researching to buy a good camera, you are likely to have come across DSLRs and Mirrorless cameras. Though they look similar, there are a lot of differences also. The basic difference is the way they process images
This is how DSLRs work
Light enters through the lens and gets bounced off a mirror, through a special prism, to end up at the viewfinder. When you click the shutter button, the mirror flips up, which allows light to hit the actual image sensor on the camera, and voila your photograph is taken. (Source)
whereas mirrorless cameras eschew the need for a flip-up mirror. Due to this essential difference in the way it works, there is a size difference as well.
So, how do you decide what is best for your photography needs and aspirations? We found this video from Jared Polin that can help you understand whether you need to go the DSLR route or the mirrorless way.